Glossary
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- DBUF: Software service responsible of implementing the UPF Downlink buffering feature
- DDN: Downlink Data Notification
- PCP: Programmable Control Plane team, now merged with PDP into SD-Fabric
- PDP: Programmable Data Plane team, now merged with PCP into SD-Fabric
- QFI: QoS Flow Identifier
- TOST: Trellis, ONOS, Stratum and Tofino, the predecessor of SD-Fabric (now obsolete)
- TNA: Tofino Native Architecture
- UPF: 5G User Plane Function
- UP4: P4 implementation of UPF of control-stack based on ONOS